Square Envelopes

Large & Small Square Envelopes for Every Occasion

Square envelopes offer a unique and elegant option for mailing invitations, greeting cards, and creative marketing materials. Available in a variety of sizes, from small square envelopes perfect for personal notes to large square envelopes ideal for statement invitations or product packaging, our collection ensures the perfect fit for any occasion.

Our range includes classic white, vibrant-coloured options, and premium textured finishes to enhance the presentation of your mailings. Ideal for weddings, corporate events, or creative promotions, these envelopes help your correspondence stand out. Peel and seal closures offer convenience and security, ensuring contents remain safe during transit.

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190mm x 190mm White Luxury 180gsm Peel & Seal Envelopes (Qty 250)

Boxed: £35.80
Unit: £0.36

160mm x 160mm Pillar Box Red 120gsm Peel & Seal Envelopes (Qty 500)

Boxed: £39.25
Unit: £0.39

165mm x 165mm Matt Green Padded Bubble Envelopes (Qty 100)

Boxed: £33.50

160mm x 160mm Vanilla Cream 120gsm Peel & Seal Envelopes (Qty 500)

Boxed: £41.90
Unit: £0.42

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125mm x 125mm White 300gsm Board Peel & Seal Envelopes (Qty 200)

Boxed: £27.90
Unit: £0.28

160mm x 160mm Avocado Green 120gsm Peel & Seal Envelopes (Qty 500)

Boxed: £39.25
Unit: £0.39

160mm x 160mm Sunset Orange 120gsm Peel & Seal Envelopes (Qty 500)

Boxed: £39.25
Unit: £0.39

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170mm x 170mm White Luxury 180gsm Peel & Seal Envelopes (Qty 250)

Boxed: £30.00
Unit: £0.30

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249mm x 249mm White Luxury 180gsm Peel & Seal Envelopes (Qty 250)

Boxed: £61.00
Unit: £0.61

155mm x 155mm Square Pillar Box Red 120gsm Peel & Seal Wallet Envelopes (Qty 500)

Boxed: £50.10
Unit: £0.50

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165mm x 165mm Matt Silver Foil Postal Bags (Qty 250)

Boxed: £57.50
Unit: £0.58

155mm x 155mm Metallic Gold Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

£68.90

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155mm x 155mm Soft Pink Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

£68.90

155mm x 155mm Kingfisher Blue Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

£68.90

155mm x 155mm Fuchsia Pink Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

£68.90

155mm x 155mm Canary Yellow Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

£68.90

160mm x 160mm Square Jet Black 120gsm Peel & Seal Wallet Envelopes (Qty 500)

Boxed: £59.95
Unit: £0.60

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165mm x 165mm Matt Burgundy Foil Postal Bags (Qty 250)

Boxed: £58.00
Unit: £0.58

155mm x 155mm Soft Blue Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

Boxed: £68.90

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155mm x 155mm Metallic Silver Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

£68.90

155mm x 155mm Meadow Green Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

£68.90

160mm x 160mm Square Storm Grey 120gsm Peel & Seal Wallet Envelopes (Qty 500)

Boxed: £37.35
Unit: £0.37

220mm x 220mm Square Metallic Gold 130gsm Wallet Peel & Seal Envelopes (Qty 250)

Boxed: £70.00
Unit: £0.70

160mm x 160mm Baby Pink 120gsm Peel & Seal Envelopes (Qty 500)

Boxed: £38.50
Unit: £0.42

155mm x 155mm Leaf Bird Green Gummed Diamond Flap Greeting Envelopes (Qty 1,000)

£68.90

Order a free sample to see this quality for yourself or order in bulk and elevate your correspondence today.

Square Envelopes FAQs

Can square envelopes be custom printed?

Yes, we offer custom printing options to help personalise envelopes with your logo, design, or message.

What are square envelopes used for?

They are ideal for sending invitations, greeting cards, creative marketing materials, and gift packaging.

What size are square envelopes UK?

Square envelopes vary from 140x140mm to 220x220mm on average.

What our customers say

Consistently excellent quality products and their turnaround time and customer service is brilliant

Have been using All Colour Envelopes for years and they have never let me down. Our business couldn't survive without them.

Actually really impressed Fantastic prices, and the quality of the products we have received are exceptional.